Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

adept +‎ -ness

Examples

In the debate over raising the government's debt ceiling, President Obama has seen his approval rating fall to a new low, his political adeptness questioned and his liberal base enraged over compromises he made on line-in-the-sand issues such as protecting Medicare from cuts.

Candidates might catch wind of public sentiment and begin campaigning on their maturity and adeptness at complex problem solving, rather than campaigning on untenable promises to handle difficult issues with oversimplified solutions.